Parts for your 2008 Honda Elysion-Sump plug washers

2008 Honda Elysion sump plug washer — what it does and when to replace it

Based on Honda factory service literature for the K24A four‑cylinder and J‑series V6 engines fitted to the 2008 Honda Elysion, the engine oil drain (sump) plug uses a single‑use aluminium crush washer. Honda’s own service manuals for these engine families specify replacing the drain plug washer at every oil change, and the common Honda part number referenced across parts catalogues is the 14 mm aluminium washer (often listed as 94109‑14000). So yes — a sump plug washer is relevant and used on the 2008 Honda Elysion.

On this Elysion, the sump plug washer’s whole job is to seal the drain bolt to the alloy sump, stopping weeps and leaks once the fresh oil is back in. It’s a soft, deformable ring that “crushes” once as the plug is torqued up, filling tiny gaps between the bolt flange and the sump face. Because it plastically deforms, it’s considered single‑use — reuse risks seepage, drips on the driveway, or a film of oil on the undertray.

During regular servicing, it’s smart to keep a few genuine‑spec 14 mm aluminium crush washers on hand. Every oil change, fit a new washer, clean the mating face on the sump, and torque the drain plug correctly. For most Honda applications of this era, the spec is around 39 N·m (about 29 lbf·ft). Over‑tightening to “be safe” can distort the washer, mark the sump face, or even strip threads — none of which is fun or cheap to fix.

Why the fuss about a tiny ring of alloy? Because it’s cheap insurance. A fresh washer helps maintain the right clamping load at the specified torque, keeps the oil level stable between services, and avoids mess. If there’s any sign of a weep after an oil change, don’t crank the bolt tighter, instead, replace the washer and re‑torque.

• Replace the washer at every oil change (time or kilometres, whichever comes first).
• Use the correct 14 mm Honda‑type aluminium crush washer, avoid hard, reusable washers that may not seal as well on a Honda sump.
• Inspect for nicks or scratches on the sump’s sealing face and clean before refitting.

For owners who like to DIY under the bonnet, sticking to genuine‑spec washers and proper torque makes the Elysion’s servicing straightforward and leak‑free.

Popular questions

What size sump plug washer does a 2008 Honda Elysion use?

It uses a 14 mm aluminium crush washer matched to the drain bolt. This is the common Honda spec across K‑series and J‑series engines, as noted in Honda parts catalogues and service literature for the period.

How often should the sump plug washer be replaced?

Every oil change. The washer is designed to crush once and create a reliable seal at the specified torque. Reusing it increases the chance of weeping or leaks.

Can a copper or reusable washer be used instead?

Honda specifies a single‑use aluminium crush washer. While a copper washer may seal in a pinch, the best result on the Elysion comes from using the correct alloy crush type and replacing it each service.